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File:CDRlogo.svg|thumb|Compact Disc Recordable (CD-R) logo/trademark '''CD-R''' ('''Compact Disc-Recordable''') is a digital media|digital optical disc data storage device|storage format. A CD-R disc is a compact disc that can be Write Once Read Many|written once and read arbitrarily many times. CD-R disks (CD-Rs) are readable by most plain CD readers, i.e., CD readers manufactured prior to the introduction of CD-R. This is an advantage over CD-RW, which can be re-written but cannot be played on many plain CD readers.
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